Comparison of corrosion behaviors between SS304 and Ti substrate coated with (Ti,Zr)N thin films as Metal bipolar plate for unitized regenerative fuel cell

Lin, Ming-Yi; Wan, Chieh-Hao; Wu, Weite

doi:10.1016/j.tsf.2013.03.130

Cited by 60 publications

(33 citation statements)

References 41 publications

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“…Efforts are therefore underway to find lower cost coating/surface treatment options for Ti plates in PEM-ECs, generally based on variations of nitride phases or refractory/platinum group metal oxides [5,[8][9][10]. Gas and plasma nitridation approaches are of interest due to their ability to coat all exposed plate surfaces with low incidence of pin-hole defects, and have shown promise in PEM fuel cell bipolar plate applications [5,[11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Evaluation of nitrided titanium separator plates for proton exchange membrane electrolyzer cells

Toops

Brady

Zhang

et al. 2014

Journal of Power Sources

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Proton exchanges membrane (PEM) regenerative fuel cell electrolysis of water is of great recent interest as a hydrogen generation technology. Anode side titanium current collectors and separator plates used in these applications typically employ coatings of platinum group metals to achieve durability and performance requirements in the high voltage, oxidizing environment. The present work assessed the potential for lower cost surface modified titanium by both thermal (gas) nitridation and plasma nitridation approaches. The nitrided Ti was found to result in far less hydrogen uptake in coupon testing than did Pt-plated Ti. Short-term (48 h) single-cell performance at 25 °C was approximately 13% better (lower voltage) at 1.2 A/cm 2 for thermal and plasma nitrided plates vs untreated Ti. However, at 50°C and 1.5 A/cm 2 , the thermally nitrided plate exhibited only on the order of 3% better behavior (lower voltage) compared to the untreated Ti and plasma nitrided Ti. Durability testing for 500 h resulted in only a minor degradation in cell performance, on the order of 1-2% voltage increase, with the best behavior exhibited by the thermally nitrided Ti plate. Despite their relatively stable cell performance, extensive local oxidation of the thermally nitrided and plasma nitrided flow field regions was observed.

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Section: Introductionmentioning

confidence: 99%

Evaluation of nitrided titanium separator plates for proton exchange membrane electrolyzer cells

Toops

Brady

Zhang

et al. 2014

Journal of Power Sources

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“…In fact, there are two interfaces in the Zr702/TA2/Q345R composite plate, and it has already run into a common view that the Zr702/TA2 interface is better for combination than the TA2/Q345R interface. 32 Table 1 lists the detailed chemical composition of Q345R, and the other two layers are Zr and Ti of 99% purity. Table 2 illustrates the comparison of mechanical properties for three component materials obtained from basic tensile tests.…”

Section: Materials Mechanical Propertiesmentioning

confidence: 99%

Investigation on the fatigue crack behavior of Zr702/TA2/Q345R composite plate with a crack normal to interface

Zhou

et al. 2019

Fatigue Fract Eng Mat Struct

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In this paper, the effects of maximum load, load ratio, and average load on fatigue crack propagation of Zr702/TA2/Q345R composite plate with a crack normal to the interface are studied by experiment and finite element method. When crack propagates to the interface from the compliant material side, the crack growth rate decreases to the minimum at first. After crack penetrates through the interface, the fatigue crack growth rate accelerates continuously. When crack propagates to the interface from the stiff material side, the fatigue crack growth rate generally increases with the crack length. Regardless of the direction of crack growth, the increase of load ratio will weaken the difference of crack growth rate near the interface caused by material property mismatch. Finite element results show that elastic modulus mismatch significantly changes the variation of the stress intensity factor amplitude. All results demonstrate that crack growth rate is dependent on the competition of the stress intensity factor amplitude, the fatigue crack growth rate in the corresponding material, and the interface strength.

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“…Therefore, the main issue with metallic bipolar plates is to enhance their corrosion properties and many researchers have tried to use coating technology to enhance their corrosion properties. [1][2][3][4] Meanwhile, bulk metallic glass (BMG) alloys are very different from conventional crystalline alloys. They have a short-range order structure and long-range homogeneity with no defects and, therefore, they can provide complete corrosion protection because there is no corrosion channel such as permeable defects.…”

Section: Introductionmentioning

confidence: 99%

Zr‐Based Thin‐Film Metallic Glass for Bipolar Plate in Proton Exchange Membrane Fuel Cells

Yoon

Choi²,

Park

et al. 2020

Adv Eng Mater

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Many researchers have tried to use metallic glass alloys in bipolar plates because of their unique properties such as their higher mechanical strength and corrosion resistances, recently. Thin‐film metallic glasses (TFMGs), herein, are coated on an austenitic stainless steel (AISI 316L) plate to enhance the corrosion properties of the metallic bipolar plate. A crystallized alloying target with the composition Zr63.9Al10Cu26.1 and a grain size of less than 1 μm is prepared by consolidating the amorphous powder at 800 °C for 30 min. Also, TFMGs are coated on the AISI 316L plate using direct current (DC) magnetron sputtering system. The contact resistance of the TFMG is decreased by 24 mΩ cm2 by controlling the surface roughness of the AISI 316L plate. The corrosion current densities of the TFMGs are less than 1 μA cm−2 under both anodic and cathodic conditions, and there are no changes of the current density in the range of potentials of 0.6–1.2 V which corresponds to the operating conditions of a proton exchange membrane (PEM) fuel cell. Based on this result, it is believed that these TFMGs can be a potential candidate coating materials for metallic bipolar plate in PEM fuel cell.

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Comparison of corrosion behaviors between SS304 and Ti substrate coated with (Ti,Zr)N thin films as Metal bipolar plate for unitized regenerative fuel cell

Cited by 60 publications

References 41 publications

Evaluation of nitrided titanium separator plates for proton exchange membrane electrolyzer cells

Evaluation of nitrided titanium separator plates for proton exchange membrane electrolyzer cells

Investigation on the fatigue crack behavior of Zr702/TA2/Q345R composite plate with a crack normal to interface

Zr‐Based Thin‐Film Metallic Glass for Bipolar Plate in Proton Exchange Membrane Fuel Cells

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